{
  "manageEntity": {
    "action": "Save",
    "entityId": "1713238951",
    "entityType": "Track",
    "nonce": "0x74bd0499c067e047e537e876d91b38002472577f0058fa30feab0fb8816b8749",
    "signature": "0x1130c4ad997817c125d0ccd8d30642e2b95cbc9f8ac506dc672ffea52cf2c5a802867883a2f6ad191fac79b84cf92e5e00cdf53016649403c8f2dbde3b1df3851b",
    "signer": "0x9369ae91F6A1cC4996D9126FD991d64e7E24c805",
    "userId": "333763354"
  }
}